Hcash is a decentralised and open-source cross-platform cryptocurrency and is designed to facilitate the exchange of information between blockchains and non-blockchain networks.

The HCASH ecosystem will consist of two chains that include the HyperCash (HC) main chain and the HyperExchange (HX) chain that is derived from the mainchain but will work towards bridging communication between blockchains including BTC, ETH and others, and non-blockchains such as DAGs. Characteristics such as post-quantum cryptographic signatures and the hybrid PoW+PoS consensus mechanism will be achieved in HyperCash mainnet. Going forward, HyperCash will focus on the in-depth development of the underlying technology of blockchain. HyperExchange is the first system to achieve interoperability using the Blockchain Multi Tunnel (BMT) protocol, HyperExchange Axis, Indicator, smart contracts and other blockchain innovations. HyperExchange lays the foundation for building crosschain distributed commercial applications in its ecosystem. These two chains serve to provide us with an interlinked, bifocal dual-token, dual-chain ecosystem that will help us solve interconnection, privacy and security issues prevalent in the current blockchain ecosystem.

In the past year, the joint efforts of the development team have resulted in varying degrees of progress in all aspects, especially the breakthrough in the field of anti-quantum signature and interoperability between blockchains.

In a nutshell: • Initial implementation in the value interoperability between blockchains; • Initial implementation in quantum resistant signature;• Innovatively combined quantum resistant technology with ring signature, which provided a feasible development plan to development quantum resistant ring signature; • Improved the zero-knowledge proof, this would lay the foundation in building zeroknowledge proof based mobile payment.